56 lines
1.8 KiB
Markdown
56 lines
1.8 KiB
Markdown
---
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layout: "functions"
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page_title: "jsonencode - Functions - Configuration Language"
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sidebar_current: "docs-funcs-encoding-jsonencode"
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description: |-
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The jsonencode function encodes a given value as a JSON string.
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---
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# `jsonencode` Function
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-> **Note:** This page is about Terraform 0.12 and later. For Terraform 0.11 and
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earlier, see
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[0.11 Configuration Language: Interpolation Syntax](../../configuration-0-11/interpolation.html).
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`jsonencode` encodes a given value to a string using JSON syntax.
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The JSON encoding is defined in [RFC 7159](https://tools.ietf.org/html/rfc7159).
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This function maps
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[Terraform language values](../expressions.html#types-and-values)
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to JSON values in the following way:
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| Terraform type | JSON type |
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| -------------- | --------- |
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| `string` | String |
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| `number` | Number |
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| `bool` | Bool |
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| `list(...)` | Array |
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| `set(...)` | Array |
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| `tuple(...)` | Array |
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| `map(...)` | Object |
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| `object(...)` | Object |
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| Null value | `null` |
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Since the JSON format cannot fully represent all of the Terraform language
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types, passing the `jsonencode` result to `jsondecode` will not produce an
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identical value, but the automatic type conversion rules mean that this is
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rarely a problem in practice.
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When encoding strings, this function escapes some characters using
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Unicode escape sequences: replacing `<`, `>`, `&`, `U+2028`, and `U+2029` with
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`\u003c`, `\u003e`, `\u0026`, `\u2028`, and `\u2029`. This is to preserve
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compatibility with Terraform 0.11 behavior.
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## Examples
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```
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> jsonencode({"hello"="world"})
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{"hello":"world"}
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```
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## Related Functions
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* [`jsondecode`](./jsondecode.html) performs the opposite operation, _decoding_
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a JSON string to obtain its represented value.
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